Select the best response to the question.

?Which of the following is a clinical indication for the use of a broad spectrum antibiotic?

A) The pathogen is virulent.
B) The pathogen has not yet been identified.
C) The pathogen is anaerobic.
D) The host is immunocompromised.


B

Biology & Microbiology

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Compared with the interstitial fluid that bathes active muscle cells, blood reaching these muscle cells in arteries has a _____

A) higher B) higher C) greater bicarbonate concentration D) lower pH E) lower osmotic pressure

Biology & Microbiology

Gram-positive bacteria such as Propionibacterium acnes limit the growth of gram-negative bacteria and some fungi on the human skin by converting secreted ________ to compounds with antimicrobial activity.

A. urea B. lipids C. organic acids D. salts

Biology & Microbiology

The accompanying figure illustrates the process of human development from fertilization to implantation. Describe what happens from day 1 through days 6-7 of this process

Biology & Microbiology

Which of the following is not found in the cytoskeleton?

A. intermediate filaments B. spindle fibers C. actin filaments D. microfilaments E. none of the above

Biology & Microbiology